General Principles: Causes of Concrete Deterioration

Concrete is one of the most commonly used construction materials because of its durability. However, its design, material limitations, exposure to severe conditions, and construction practices cause it to deteriorate over time. As a result, the building's structural and functional integrity, as well as aesthetics, are compromised. This guide will discuss the common concrete deterioration causes and factors influencing them. 

Embedded Materials Corroding

Corrosion of embedded building metals such as steel pipes and rebar causes concrete structures to deteriorate. Steel corrosion results in rust which occupies more volume than steel. As a result, increased stress on the concrete causes delamination, spalling, and cracking.

Concrete Placement Issues

Proper concrete placement fulfills essential structural design requirements and minimizes the likelihood of early deterioration. When assessing the building structure, it's crucial to identify the defects and develop a proper repair plan. Cracking is a common defect in concrete structures that is caused due to high water-to-cement ratio, inadequate subbase or substrate preparation, poor concrete consolidation, and improper curing methods.

Scaling and Flaking

Scaling and flaking of concrete are often caused when water enters the structure through cracks and repeatedly freezes and thaws. In winter, water repeatedly expands and contracts, leading to concrete deterioration. Another reason for this damage is exposure to caustic solutions and deicing salts or inadequate curing or premature finishing.

 Aggregate Expansion

Some aggregates have a higher tendency to absorb water until they cannot tolerate expansion. This leads to concrete disintegration, especially due to the presence of many offending particles. Problem particles near the concrete surface cause a pop-out.

As a result of water accumulation, the aggregate becomes saturated. Later as water freezes and thaws, concrete begins to crack in the saturated aggregate. The cracking starts at the slab's bottom, progressing upward toward the surface.

If you're looking for a concrete repair contractor in Boston, Lexington, Concord, or surrounding areas in Massachusetts, give us a call today. We offer a range of services, including walkway and patio repairs, stone and lintel repair and replacement, foundation waterproofing boston, and more.

Contact us today to get a free quote. Our team will closely assess the concrete structure before recommending the right treatment option.